add mgconfig conversion to lib

parse/mgconf.go

@@ -2,6 +2,7 @@ package parse
 
 import (
 	"encoding/json"
+	"io/ioutil"
 	"os"
 	"path/filepath"
 )
@@ -54,3 +55,26 @@ func LoadMGConfig() (MGConfig, error) {
 
 	return config, err
 }
+
+func (m MGConfig) Save() error {
+	mgConf := os.Getenv("MGCONFIG")
+	if mgConf == "" {
+		confDir := os.Getenv("XDG_CONFIG_HOME")
+		if confDir == "" {
+			home, err := os.UserHomeDir()
+			if err != nil {
+				return err
+			}
+			confDir = filepath.Join(home, ".config")
+			if _, err := os.Stat(confDir); err != nil {
+				return err
+			}
+		}
+		mgConf = filepath.Join(confDir, "mgconfig")
+	}
+	b, err := json.MarshalIndent(m, "", "  ")
+	if err != nil {
+		return err
+	}
+	return ioutil.WriteFile(mgConf, b, 0o644)
+}

parse/myrepos.go

@@ -29,6 +29,20 @@ func (m MRConfig) GetRepoPaths() []string {
 	return paths
 }
 
+func (m MRConfig) ToMGConfig() MGConfig {
+	mgconf := MGConfig{
+		Repos:   []Repo{},
+		Aliases: m.Aliases,
+	}
+	for _, r := range m.Repos {
+		mgconf.Repos = append(mgconf.Repos, Repo{
+			Path:    r.Path,
+			Aliases: r.Aliases,
+		})
+	}
+	return mgconf
+}
+
 // LoadMRConfig loads the mrconfig file from the user's home directory
 // and returns a MRConfig struct
 // TODO: load aliases into map instead of hardcoded Unregister prop